Improvement in boring-machines



UNITED STATES PATENT OrFIoE.

HARLIN LONGWELL, OF MANSFIELD, PENNSYLVANIA.

IMPROVEMENT IN BORING-MACHINES.

Specification forming part of Letters Patent No. 139,901, dated June 17, 1873; application filed May 10, 1873.

To all whom it may concern:

Be it known that I, HARLIN LONGWELL, of Mansfield, in the county of Tioga and State of Pennsylvania, have invented certain new and useful Improvements in Borin g-Machines; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings and to the letters of reference marked thereon,

which form a part of this specification.

The nature of my invention consists in the construction and arrangement of a machine particularly designed for tenoning spokes and boring fellies, and which will also do any kind of right-angle boring, as will be hereinafter more fully set forth.

In order to enable others skilled in the art to which my invention appertains to make and use the same,-I will now proceed to describe its construction and operation, referring to the annexed drawing, which represents a side elevation of my machine.

A represents an ordinary wh eel-bench, upon which the wheel 13 is held firmly by means of a rod, (J, and thumb-nut, a. The lower end of the rod 0 hooks or couples in an eye-screw, b, in the floor, and the upper end passes through a wooden bar, I), laid on the hub of thewheel B, and then the thumb-nut so screwed on to unite the parts firmly. In the bar D are a number of holes,.as shown by dotted lines in the drawing, so that the bar may be adjusted on the rod 0 to suit wheels of different size. Through a mortise in the other or outer end of the bar D passes a ratchet-bar, E, held by a pawl, G, at any desired height to adapt the machine to any dish of wheel. d is the seat of the pawl G, and e is the spring for holding said pawl against the ratchet-bar E. On the under side of the bar 1) is a corner-iron, f, located close up against the back of the ratchetbar for steadying and bracing the same. On the lower end of the ratchet-bar E is formed or attached a horizontal tube, H, provided with screw-threads around the inside. In this tube is screwed a hollow sleeve, I, on the outer end of which is attached a fly or balancewheel, J, the sleeve being for a certain distance from said balance -whee1 inwardly smooth and devoid of screw-threads. Through the sleeve I is passed a rod or shaft, h, which has 011 its outer end a crank, K, and on its inner end a socket or holder, m, the said crank or holder coming close up to their respective ends of the hollow-screw sleeve.

For tenoning spokes, a common hollow auger, L is inserted in the socket or holder m, and by turning the crank K said auger will cut the tenon on the spoke, the feed being m regulated by a set-screw, a, passing through the hollow sleeve immediately inside of the balance-wheel, securing the same on to the interior rod h and the depth or length of the tenon is regulated by means of an adjustable collar M on the sleeve, fastened at any desired point by means of a set-screw, 10.

For boring fellies, a bit is inserted in the socket in place of the hollow auger, and a felly-holder, N, is adjusted in a vertical slide, 0, and fitted over the felly to prevent the same from rising up or running up on the bit. The slide 0 is adjusted in a socket, P, secured on the side of the bar D.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination of the mortised bar D, ratchet-bar E, with tube H for holding the working parts, the pawl G and spring 6, all substantially as and for the purposes herein set forth.

2. The socket P with adjustable slide 0, and adjustable folly-holder N, for the purposes herein set forth.

In testimony that I claim the foregoing as my own I affix my signature in the presence of two witnesses.

HARLIN LonewELL. Witnesses J. W. ADAMS, O. E. BLACKWELL. 

